Analog Devices Inc./Maxim Integrated MAX20002CATPB/V+

Overview

MAX20002CATPB/V+ from Maxim Integrated is a 2A synchronous buck converter with integrated high-side and low-side MOSFETs, operating from 3.5V to 36V input and delivering fixed 5V/3.3V or adjustable 1V–10V output. It achieves 15µA quiescent current in skip mode, supports 220kHz–2.2MHz resistor-programmable switching frequency, and features PGOOD monitoring and AEC-Q100 qualification for automotive point-of-load regulation.

For engineers reviewing the MAX20002CATPB/V+ datasheet, MAX20002CATPB/V+ pinout, MAX20002CATPB/V+ application, or MAX20002CATPB/V+ equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade operating parameters (−40°C to +125°C, 42V load-dump tolerance), and real-world design implications of its 99% duty-cycle dropout operation and spread-spectrum EMI control.

Technical Context

This device implements current-mode control with internal transconductance error amplifier (700µS), fixed 8ms soft-start, and cycle-by-cycle overcurrent protection. Its dual-supply architecture separates SUP (bias regulator input) and SUPSW (high-side switch supply), enabling stable operation during cold-crank transients down to 3.5V.

The IC supports three operational modes: forced PWM (via FSYNC tied to BIAS or external clock), skip mode (FSYNC to AGND), and synchronized operation (external clock within ±20% of internal frequency). Spread spectrum (±3% frequency modulation, 110µs period at 2.2MHz) is enabled via SPS pin and disabled during external synchronization.

Key Specifications

Pinout & Package

MAX20002CATPB/V+ uses a 20-pin 5mm × 5mm TQFN package with exposed pad (Package Code: T2055+4C, Outline Number: 21-0140), optimized for thermal dissipation in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Compared with LM61480QRTWRQ1 and TPS54240DGQR, MAX20002CATPB/V+ uniquely combines AEC-Q100 Grade 1, 15µA skip-mode IQ, programmable spread spectrum, and PGOOD in a compact 5mm × 5mm TQFN - making it the optimal choice for space-constrained, EMC-sensitive automotive infotainment and body electronics.

Availability

MAX20002CATPB/V+ is available at Aetrix Electronics and suitable for automotive navigation systems, body control modules, and ADAS camera power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX20002CATPB/V+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power-management ICs for automotive, industrial, and communications applications.

MAX20002CATPB/V+ belongs to the MAX2000x automotive power-supply family, engineered specifically for harsh-temperature, high-reliability DC-DC conversion in vehicle subsystems requiring AEC-Q100 compliance and ultra-low quiescent current.

FAQ

What is the maximum output current capability of the MAX20002CATPB/V+?

The MAX20002CATPB/V+ delivers up to 2A continuous output current under specified thermal conditions (TA ≤ +70°C, 4-layer board, θJA = 30°C/W). At higher ambient temperatures, derating applies per the 33.3mW/°C thermal coefficient above +70°C. The device's 2.5A typical current limit ensures robust short-circuit protection while maintaining 2A steady-state performance in automotive cabin environments.

Does the MAX20002CATPB/V+ support adjustable output voltage, and how is it configured?

Yes, the MAX20002CATPB/V+ supports output voltages from 1V to 10V using an external resistive divider from OUT to FB to AGND, with VFB = 1V reference. For fixed 5V or 3.3V outputs, connect FB directly to BIAS. The FB input accuracy is ±1% for adjustable configurations, enabling precise regulation for sensitive analog or digital loads in the MAX20002CATPB/V+ design.

How does the MAX20002CATPB/V+ handle automotive load-dump transients?

The MAX20002CATPB/V+ withstands 42V load-dump transients (t < 1s) without damage or latch-up, thanks to internal protection circuitry and robust oxide design. Its absolute maximum SUP/SUPSW rating is +42V, and it continues regulating during lower-voltage transients (e.g., cold crank down to 3.5V) via 99% duty-cycle operation - eliminating need for external TVS diodes in most automotive implementations of the MAX20002CATPB/V+.

Can the MAX20002CATPB/V+ be synchronized to an external clock, and what are the constraints?

Yes, the MAX20002CATPB/V+ synchronizes to an external clock applied to the FSYNC pin, with acceptable frequency range ±20% of the internal oscillator setting (e.g., 1.76MHz–2.64MHz for nominal 2.2MHz). Synchronization occurs within two cycles; if the external clock stops for >2 cycles, the device reverts to internal timing. During synchronization, spread spectrum is disabled - a key timing behavior in the MAX20002CATPB/V+'s EMI management strategy.

What thermal management provisions are built into the MAX20002CATPB/V+?

The MAX20002CATPB/V+ integrates thermal shutdown at 175°C (typical) with 15°C hysteresis, allowing automatic recovery after cooling. Its 5mm × 5mm TQFN package features an exposed pad (EP) that must be soldered to a large PGND copper area to achieve θJC = 2°C/W. With proper PCB layout, the MAX20002CATPB/V+ sustains 2A output at +105°C ambient - critical for under-dash and engine-compartment applications.